== sanity test 101a: check read-ahead for random reads === 12:19:06 (1772471946) nreads: 10000 file size: 96MB 180.329160s, 3.40928MB/s osc.lustre-OST0000-osc-ffff9aae8590b000.rpc_stats= snapshot_time: 1772472149.109673747 secs.nsecs start_time: 1772471948.747016704 secs.nsecs elapsed_time: 200.362657043 secs.nsecs read RPCs in flight: 0 write RPCs in flight: 0 DIO RPCs in flight: 0 pending write pages: 0 pending read pages: 0 read write pages per rpc rpcs % cum % | rpcs % cum % 1: 0 0 0 | 0 0 0 2: 1 0 0 | 0 0 0 4: 4 0 0 | 0 0 0 8: 3 0 0 | 0 0 0 16: 6133 99 100 | 0 0 0 32: 0 0 100 | 0 0 0 64: 0 0 100 | 0 0 0 128: 0 0 100 | 0 0 0 256: 0 0 100 | 0 0 0 512: 0 0 100 | 0 0 0 1024: 0 0 100 | 25 100 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 6141 100 100 | 25 100 100 read write offset rpcs % cum % | rpcs % cum % 0: 6 0 0 | 1 4 4 1: 0 0 0 | 0 0 4 2: 0 0 0 | 0 0 4 4: 0 0 0 | 0 0 4 8: 0 0 0 | 0 0 4 16: 5 0 0 | 0 0 4 32: 8 0 0 | 0 0 4 64: 19 0 0 | 0 0 4 128: 30 0 1 | 0 0 4 256: 64 1 2 | 0 0 4 512: 125 2 4 | 0 0 4 1024: 233 3 7 | 1 4 8 2048: 518 8 16 | 2 8 16 4096: 1009 16 32 | 4 16 32 8192: 2008 32 65 | 8 32 64 16384: 2116 34 100 | 9 36 100 read write RPC latency (us) count % cum % | count % cum % 0: 0 0 0 | 0 0 0 1: 0 0 0 | 0 0 0 2: 0 0 0 | 0 0 0 4: 0 0 0 | 0 0 0 8: 0 0 0 | 0 0 0 16: 0 0 0 | 0 0 0 32: 0 0 0 | 0 0 0 64: 0 0 0 | 0 0 0 128: 0 0 0 | 0 0 0 256: 0 0 0 | 0 0 0 512: 0 0 0 | 0 0 0 1024: 0 0 0 | 0 0 0 2048: 0 0 0 | 0 0 0 4096: 525 8 8 | 0 0 0 8192: 3617 58 67 | 0 0 0 16384: 1779 28 96 | 0 0 0 32768: 334 5 101 | 1 4 4 65536: 30 0 102 | 21 84 88 131072: 0 0 102 | 3 12 100 262144: 0 0 102 | 0 0 100 524288: 0 0 102 | 0 0 100 1048576: 0 0 102 | 0 0 100 2097152: 0 0 102 | 0 0 100 4194304: 0 0 102 | 0 0 100 8388608: 0 0 102 | 0 0 100 16777216: 0 0 102 | 0 0 100 33554432: 0 0 102 | 0 0 100 67108864: 0 0 102 | 0 0 100 134217728: 0 0 102 | 0 0 100 268435456: 0 0 102 | 0 0 100 536870912: 0 0 102 | 0 0 100 1073741824: 0 0 102 | 0 0 100 osc.lustre-OST0001-osc-ffff9aae8590b000.rpc_stats= snapshot_time: 1772472149.109997857 secs.nsecs start_time: 1772471948.747052099 secs.nsecs elapsed_time: 200.362945758 secs.nsecs read RPCs in flight: 0 write RPCs in flight: 0 DIO RPCs in flight: 0 pending write pages: 0 pending read pages: 0 read write pages per rpc rpcs % cum % | rpcs % cum % 1: 0 0 0 | 0 0 0 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 0 0 0 | 0 0 0 read write offset rpcs % cum % | rpcs % cum % 0: 0 0 0 | 0 0 0 read write RPC latency (us) count % cum % | count % cum % 0: 0 0 0 | 0 0 0 llite.lustre-ffff9aae8590b000.read_ahead_stats= snapshot_time 1772472149.123189660 secs.nsecs start_time 1772471948.788344998 secs.nsecs elapsed_time 200.334844662 secs.nsecs hits 91985 samples [pages] misses 6141 samples [pages] readpage_not_consecutive 9374 samples [pages] zero_size_window 91985 samples [pages] failed_to_fast_read 6141 samples [pages] readahead_pages 6141 samples [pages] 1 15 91985